With their 1978 eponymous debut, Van Halen simultaneously rewrote the rules of rock guitar and hard rock in general. Guitarist Eddie Van Halen redefined what electric guitar could do, developing a blindingly fast technique with a variety of self-taught two-handed tapping, hammer-ons, pull-offs, and effects that mimicked the sounds of machines and animals. It was wildly inventive and over the top, equaled only by vocalist David Lee Roth, who brought the role of a metal singer to near-performance art standards. Roth wasn't blessed with great technique, unlike Eddie, but he had a flair for showmanship that was derived as much from lounge performers as Robert Plant. Together, they made Van Halen into the most popular American rock & roll band of the late '70s and early '80s, and in the process set the template for hard rock and heavy metal for the '80s.